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| 5/12/2018 | Jamestown Speedway - Jamestown, ND Opening Night A Modifieds, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Results | | Tanner Theis (WISSOTA Midwest Mods) | 6th | - | - | 13th |
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| 5/19/2018 | Devils Lake Speedway - Crary, ND 410 Sprints - Winged, A Modifieds, B Modifieds, Pure Stock, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock | Results | | Tanner Theis (WISSOTA Midwest Mods) | 5th | - | - | 11th |
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| 5/26/2018 | Jamestown Speedway - Jamestown, ND Armed Forces Night A Modifieds, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Results | | Tanner Theis (WISSOTA Midwest Mods) | 6th | - | - | 15th (DNF) |
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| 6/9/2018 | Jamestown Speedway - Jamestown, ND NOSA Sprint Cars 410 Sprints - Winged, A Modifieds, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Results | | Tanner Theis (WISSOTA Midwest Mods) | 4th | - | - | 13th |
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| 6/16/2018 | Jamestown Speedway - Jamestown, ND Points Race A Modifieds, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Rain Out |
| 6/23/2018 | Jamestown Speedway - Jamestown, ND Kids Night A Modifieds, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Rain Out |
| 6/30/2018 | Jamestown Speedway - Jamestown, ND Fair race B Modifieds, Sport Compact, Pure Stock, All Star Slingshots, Junior Slingshots | Dropped |
| 7/4/2018 | Jamestown Speedway - Jamestown, ND Fireworks Spectacular A Modifieds, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Results | | Tanner Theis (WISSOTA Midwest Mods) | 6th | - | - | 16th |
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| 7/14/2018 | Devils Lake Speedway - Crary, ND 410 Sprints - Winged, A Modifieds, B Modifieds, Pure Stock, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock | Results | | Tanner Theis (WISSOTA Midwest Mods) | 6th | - | - | 9th |
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| 7/21/2018 | Devils Lake Speedway - Crary, ND 410 Sprints - Winged, A Modifieds, B Modifieds, Pure Stock, WISSOTA Midwest Mods, WISSOTA Late Model | Results | | Tanner Theis (WISSOTA Midwest Mods) | 7th | - | - | 11th |
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| 7/28/2018 | Devils Lake Speedway - Crary, ND Dirt Mini Trucks, A Modifieds, B Modifieds, Limited Sport Mod, Pure Stock, WISSOTA Midwest Mods, WISSOTA Street Stock | Results | | Tanner Theis (WISSOTA Midwest Mods) | 9th (DNF) | - | 11th | - |
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| 8/4/2018 | Jamestown Speedway - Jamestown, ND NLRA Late Models A Modifieds, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock, Junior Slingshots | Results | | Tanner Theis (WISSOTA Midwest Mods) | 3rd | - | - | 14th |
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| 8/11/2018 | Jamestown Speedway - Jamestown, ND Points Race A Modifieds, Semi-Pro Legends, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Results | | Tanner Theis (WISSOTA Midwest Mods) | 4th | - | - | 12th |
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| 8/18/2018 | Jamestown Speedway - Jamestown, ND Points Race A Modifieds, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Results | | Tanner Theis (WISSOTA Midwest Mods) | 8th | - | 4th | 22nd (DNF) |
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| 8/25/2018 | Jamestown Speedway - Jamestown, ND SEASON CHAMPIONSHIP A Modifieds, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Street Stock, Junior Slingshots | Results | | Tanner Theis (WISSOTA Midwest Mods) | 7th | - | - | 17th |
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| 9/1/2018 | Nodak Speedway - Minot, ND Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Tanner Theis (A Modifieds) | 7th | - | 15th (DNF) | - |
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| 9/2/2018 | Nodak Speedway - Minot, ND 410 Sprints - Winged, Hobby Stocks, Stock Cars, A Modifieds, B Modifieds, Sport Compact | Results | | Tanner Theis (A Modifieds) | 8th | - | 8th | - |
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| 9/6/2018 | River Cities Speedway - Grand Forks, ND Prelude to the Johnny A Modifieds, B Modifieds, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock | Results | | Tanner Theis (WISSOTA Midwest Mods) | 6th | - | 9th | - |
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| 9/7/2018 | River Cities Speedway - Grand Forks, ND Night #1 Seitz Memorial 410 Sprints - Winged: Northern Outlaw Sprint Association A Modifieds, B Modifieds, WISSOTA Midwest Mods, WISSOTA Modifieds, WISSOTA Late Model, WISSOTA Street Stock | Results | | Tanner Theis (WISSOTA Midwest Mods) | 5th | - | DNS | - |
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| 9/21/2018 | Jamestown Speedway - Jamestown, ND 47th ANNUAL STOCK CAR STAMPEDE night 1 A Modifieds, Midwest Modifieds, B Modifieds, Semi-Pro Legends, Pure Stock, All Star Slingshots, WISSOTA Midwest Mods, WISSOTA Late Model, WISSOTA Street Stock, WISSOTA Super Stock, Junior Slingshots | Results | | Tanner Theis (WISSOTA Midwest Mods) | 9th | - | 10th | - |
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| 9/30/2018 | Sheyenne Speedway - Lisbon, ND Battle at the Boneyard - Final Race of the Year! A Modifieds, Sport Compact, Pure Stock, WISSOTA Midwest Mods, WISSOTA Street Stock, WISSOTA Super Stock | Results | | Tanner Theis (WISSOTA Midwest Mods) | 8th | - | - | 15th |
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